Insulated boots are a piece of Slayer equipment worn to safely fight killerwatts, requiring a Slayer level of 37 to wear. They can be purchased from all Slayer Masters for 200 coins. The "insulated" refers to protecting the player wearing them from electric shock produced by a killerwatt; if they are not worn inside the killerwatt plane, the player will sustain up to 1500 damage by the thunderclouds inside the area.